Using controlled electric-power lines with controlled series compensation in smart-grid networks

Abstract

The application of controlled series-compensation devices (SCDs) is one trend in development of controlled electric-power lines (EPLs). The influence of controlled SCDs on the regimes and stability of an electric-power system with two generating plants was considered. The methods of mathematical modeling, numerical integration, D decomposition, and computing experiment were used in the research. It was revealed that controlled SCDs make it possible to increase the EPL capacity and have a positive effect on the margins for the static aperiodic and dynamic stability, without leading to instability at compensation typical for the operating regimes of electric-power systems (EPSs). The methodology for determining the range of change of the parameter of a controlled SCD in order to define its optimal amount making it possible, on the one hand, to have a maximum positive effect on EPL capacity and static aperiodic and dynamic stability and, on the other hand, to prevent oscillatory instability was proposed. The possibility of constructing smart-grid networks based on controlled SCDs is revealed. The construction of a smart-grid network with use of controlled SCDs leads to the creation of highly integrated, new-generation smart electricity networks that are characterized by increased EPL capacity and increased static- and dynamic-stability margins.